C#

int x=10;
int y=999;

string sForX=String.Format("{0:0000}", x); 
string sForY=String.Format("{0:0000}", y);

private object _yourobject;
 
public object YourObject
{
    get
    {
        return _yourobject;
    }
    set
    {
        if(value!=_yourobject)
        {
            _yourobject = value;
            //Fire your event here
        }
    }
}

    public class testClass 
    {
        public int s1 = 0;
        public int s2 = 0;
        public int s3 = 0;

    }

private testClass Mumu=new testClass ();

        public testClass mumu       
        {
            set
            {
                //can put here one event, function ....
                MessageBox.Show("bingo");
                Mumu = value;
            }
            get
            {
                //can put here one event, function ....
                MessageBox.Show("bingo");
                return Mumu;
            }
        }

................

        private void button2_Click(object sender, EventArgs e)
        {
            mumu.s1 = 10;
        }

Martin# wrote:

What do you mean with "program"?
A class or an project?